About non-Gaussian behaviour of the Debye-Waller factor at large scattering vectors I. D. Feranchuk, A. A. Minkevich and A. P. Ulyanenkov Eur. Phys. J. Appl. Phys., 24 1 (2003) 21-26 Published online: 03 September 2003 DOI: 10.1051/epjap:2003058